Posco International announced on September 15 (local time) that it had signed a memorandum of understanding with Ulaanbaatar City at Ulaanbaatar City Hall in Mongolia to promote a "heating supply project utilizing wastewater heat."
Under this partnership, Posco International will pursue a plan to supply waste heat generated from Ulaanbaatar’s central wastewater treatment plant to nearby redeveloped residential areas. The two parties will jointly conduct a feasibility study for the project by the first half of 2026. If the project is proven to be economically and technologically viable, they plan to implement the main project for 15 years using the BOT (Build-Operate-Transfer) model starting in the second half of the year. Once completed, district heating will be provided to a newly constructed residential complex with 4,000 households.
Ulaanbaatar is known as one of the cities with the worst air pollution in the world during winter, with coal used for heating identified as a major cause. Posco International has proposed a solution that recycles waste heat generated during the wastewater treatment process to supply district heating, thereby reducing both greenhouse gas emissions and fine particulate matter.
Posco International is currently operating a district heating project utilizing wastewater heat at the Tancheon Wastewater Treatment Plant in Seoul. The company supplies 204,900 gigacalories of heat annually to 20,000 households in Gangnam District, saving approximately 20,490 tons of oil equivalent and reducing carbon dioxide emissions by 33,972 tons.
A Posco International representative stated, "This project not only contributes to solving Ulaanbaatar’s environmental issues, but also marks a significant step in applying Posco Group’s eco-friendly energy technology and business capabilities overseas. We also plan to explore the possibility of expanding this business into the Central Asian region."

Published Date:2025-09-16